Tufting wicking or roving yarn



L. W. FRANK TUFTING WICKING 0R ROVING YARN Nov. 24, 1925.

Filed 001;. 20, 1924 r JIZV67ZiG f Patented Nov. 24, 1925.

UNITED STATES 1,563,307 PATENT OFFICE.

LEE WASHINGTON FRANK, OF CHICAGO, ILLINOIS, ASSIGNOR T0 HARRY I.KLAWANS,

OF CHICAGO, ILLINOI$.

EUIE'IING WICKING 0R ROVING YARN.

Application filed October 20, 1924. Serial No. 744,649.

To all whom it may concern:

Be it known that I, LEE \VAsHINeToN FRANK, a citizen of the UnitedStates, and a resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in TuftingWicking or Roving Yarn, of which the following is a full, clear, andexact description, such as will enable others skilled in the art to makeand use the same.

My present invention relates to improvements in tufting-wicking orroving yarn. This material consists of a number of roves of textilefibers, usually cotton, which roves are generally slightly twistedtogether to prevent their too easy disengagement from each other but notso tightly twisted as to materially compact the yarn. The roves of whichthe tufting-wicking or roving yarn is composed are themselves bundles oftextile fibers slightly twisted together which are usually either pulledout and more tightly spun to make ordinary yarn, or employed directlyfor such purposes as require very slightly compacted bundles of fibers.

Machines have been provided, and are now in very general use, which feedthe tufting-wicking or roving yarn to the upholstery and stitch it inplace, but for the better operation of these machines a tufting- Wickingor roving yarn is required which has a uniform size throughout itslength, and which will develop no tendency to twist or buckle during itsfeeding or passage through the tube of the machine. Textile fibers haveelasticity,-that is a tendency to resume their original condition afterhandling, and both the roves and vbundles of roves have a tendency tountwist which is usually known and referred to as backtwist. Thisbecomes particularly evident when feeding the yarn through the tube ofthe machine. Also, when a bundle of roves are twisted together theexterior roves necessarily have to be of greater length than theinterior roves, and when any untwisting occurs in pursuance with thetendency to back-twist, which is always present, it impairs thelongitudinal uniformity of the wicking or yarn especially as to size.

The objects of my present invention are to provide a tufting-wicking orroving yarn of greater longitudinal uniformity as to size, and a wickingor yarn in which the tendency to back-twist is overcome. I attain theforegoing objects by means of the structure or construction illustratedin the accompanying drawings, in which Figure 1 is a greatly exaggeratedview of a short length of tufting-wicking or roving yarn formed inaccordance with and embodying my present invention;

Fig. 2 is a similar view to that shown in Fig. l in which a rove and theouter constricting yarn is shown partially disengaged from the bundle orbody of the wicking or yarn and partially untwisted to more clearlyillustrate the manner of twisting in the preferred form of my invention;and

Fig. 3 is a view of still another length of tufting-wicking or rovingyarn showing a different manner in which the constructing yarn may bedisposed with respect to the bundle of roves.

In constructing my improved tuftingwicking or roving yarn, I take asuitable number of roves, 5 to provide a tuftingwicking or roving yarn,6 of the desired size, and, instead of slightly twisting these rovestogether, I dispose them straight and roves, each disposed parallel withthe axis of the bundle, a yarn 7. This yarn may be disposed quiteloosely, that is, the respective convolutions quite far apart, as shown.But owing to the fact that the yarn crosses the roves at quite an anglethe respective tendencies of the yarn and the roves to backtwist do notcoincide in direction or extent and thus the tendency of the structureas a whole to back-twist is reduced.

However, in the preferred form of my invention, illustrated in detail inFig. 2, I twist the yarn 7 in the opposite direction to that in whichthe roves 5 are twisted, so that when the yarn is wrapped about thebundle of roves, their respective back-twist will be in oppositedirections and will neutralize each other and cause the yarn to snuglyhug the bundle of roves.

It makes no particular difference in which direction the yarn is wrappedabout the Lil bundle of roves, so I have illustrated it in Figs. 1 and 2as wrepp ediin one direction, and 1n Fig. 3 as Wrapped n the contrarydirection. Also, more than one rapping yarn may be employed and these Wrin connection witluthe drawings, it will now be seen that without in anyway imr'tln tf f1 H 110 oaning. no SOL nu 3 naciueci no com pletedproduct I have. produced a tuft-ingsic strength, greater longitudinaluniformity, both with respect to size and strength as Well as a atuftingwioking; or roving yarn in which the tendencyto back-twist iseliminated.

Having described my invention, what I claim as new and desire to secureby Letters Patent is A tufting-Wicking comprising n bundle of roves, therespective roves of which lie parallel, with the axis of the bundle, con

voluted around which bundle is a yarn twisted in a contrary direction/tothe direction of twisting of the respective roves of said bundle.

- Signed at Chicago, county of Cook and State of Illinois, this 7th dayof July 1924-.

LEE WASHINGTON FRANK.

